[linux-block.git] / drivers / ide / ide-cd_ioctl.c

/*
 * cdrom.c IOCTLs handling for ide-cd driver.
 *
 * Copyright (C) 1994-1996  Scott Snyder <snyder@fnald0.fnal.gov>
 * Copyright (C) 1996-1998  Erik Andersen <andersee@debian.org>
 * Copyright (C) 1998-2000  Jens Axboe <axboe@suse.de>
 */

#include <linux/kernel.h>
#include <linux/cdrom.h>
#include <linux/ide.h>
#include <scsi/scsi.h>

#include "ide-cd.h"

/****************************************************************************
 * Other driver requests (open, close, check media change).
 */
int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose)
{
	return 0;
}

/*
 * Close down the device.  Invalidate all cached blocks.
 */
void ide_cdrom_release_real(struct cdrom_device_info *cdi)
{
	ide_drive_t *drive = cdi->handle;

	if (!cdi->use_count)
		drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}

/*
 * add logic to try GET_EVENT command first to check for media and tray
 * status. this should be supported by newer cd-r/w and all DVD etc
 * drives
 */
int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
{
	ide_drive_t *drive = cdi->handle;
	struct media_event_desc med;
	struct request_sense sense;
	int stat;

	if (slot_nr != CDSL_CURRENT)
		return -EINVAL;

	stat = cdrom_check_status(drive, &sense);
	if (!stat || sense.sense_key == UNIT_ATTENTION)
		return CDS_DISC_OK;

	if (!cdrom_get_media_event(cdi, &med)) {
		if (med.media_present)
			return CDS_DISC_OK;
		else if (med.door_open)
			return CDS_TRAY_OPEN;
		else
			return CDS_NO_DISC;
	}

	if (sense.sense_key == NOT_READY && sense.asc == 0x04
			&& sense.ascq == 0x04)
		return CDS_DISC_OK;

	/*
	 * If not using Mt Fuji extended media tray reports,
	 * just return TRAY_OPEN since ATAPI doesn't provide
	 * any other way to detect this...
	 */
	if (sense.sense_key == NOT_READY) {
		if (sense.asc == 0x3a && sense.ascq == 1)
			return CDS_NO_DISC;
		else
			return CDS_TRAY_OPEN;
	}
	return CDS_DRIVE_NOT_READY;
}

int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
				       int slot_nr)
{
	ide_drive_t *drive = cdi->handle;
	int retval;

	if (slot_nr == CDSL_CURRENT) {
		(void) cdrom_check_status(drive, NULL);
		retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
		drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
		return retval;
	} else {
		return -EINVAL;
	}
}

/* Eject the disk if EJECTFLAG is 0.
   If EJECTFLAG is 1, try to reload the disk. */
static
int cdrom_eject(ide_drive_t *drive, int ejectflag,
		struct request_sense *sense)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_device_info *cdi = &cd->devinfo;
	char loej = 0x02;
	unsigned char cmd[BLK_MAX_CDB];

	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
		return -EDRIVE_CANT_DO_THIS;

	/* reload fails on some drives, if the tray is locked */
	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
		return 0;

	/* only tell drive to close tray if open, if it can do that */
	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
		loej = 0;

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_START_STOP_UNIT;
	cmd[4] = loej | (ejectflag != 0);

	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0);
}

/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
static
int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
		    struct request_sense *sense)
{
	struct request_sense my_sense;
	int stat;

	if (sense == NULL)
		sense = &my_sense;

	/* If the drive cannot lock the door, just pretend. */
	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
		stat = 0;
	} else {
		unsigned char cmd[BLK_MAX_CDB];

		memset(cmd, 0, BLK_MAX_CDB);

		cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
		cmd[4] = lockflag ? 1 : 0;

		stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
				       sense, 0, 0);
	}

	/* If we got an illegal field error, the drive
	   probably cannot lock the door. */
	if (stat != 0 &&
	    sense->sense_key == ILLEGAL_REQUEST &&
	    (sense->asc == 0x24 || sense->asc == 0x20)) {
		printk(KERN_ERR "%s: door locking not supported\n",
			drive->name);
		drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
		stat = 0;
	}

	/* no medium, that's alright. */
	if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
		stat = 0;

	if (stat == 0) {
		if (lockflag)
			drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED;
		else
			drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
	}

	return stat;
}

int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
{
	ide_drive_t *drive = cdi->handle;
	struct request_sense sense;

	if (position) {
		int stat = ide_cd_lockdoor(drive, 0, &sense);

		if (stat)
			return stat;
	}

	return cdrom_eject(drive, !position, &sense);
}

int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
{
	ide_drive_t *drive = cdi->handle;

	return ide_cd_lockdoor(drive, lock, NULL);
}

/*
 * ATAPI devices are free to select the speed you request or any slower
 * rate. :-(  Requesting too fast a speed will _not_ produce an error.
 */
int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
{
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *cd = drive->driver_data;
	struct request_sense sense;
	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
	int stat;
	unsigned char cmd[BLK_MAX_CDB];

	if (speed == 0)
		speed = 0xffff; /* set to max */
	else
		speed *= 177;   /* Nx to kbytes/s */

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_SET_SPEED;
	/* Read Drive speed in kbytes/second MSB/LSB */
	cmd[2] = (speed >> 8) & 0xff;
	cmd[3] = speed & 0xff;
	if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) !=
	    (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) {
		/* Write Drive speed in kbytes/second MSB/LSB */
		cmd[4] = (speed >> 8) & 0xff;
		cmd[5] = speed & 0xff;
	}

	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);

	if (!ide_cdrom_get_capabilities(drive, buf)) {
		ide_cdrom_update_speed(drive, buf);
		cdi->speed = cd->current_speed;
	}

	return 0;
}

int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
			       struct cdrom_multisession *ms_info)
{
	struct atapi_toc *toc;
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *info = drive->driver_data;
	struct request_sense sense;
	int ret;

	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) {
		ret = ide_cd_read_toc(drive, &sense);
		if (ret)
			return ret;
	}

	toc = info->toc;
	ms_info->addr.lba = toc->last_session_lba;
	ms_info->xa_flag = toc->xa_flag;

	return 0;
}

int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
		      struct cdrom_mcn *mcn_info)
{
	ide_drive_t *drive = cdi->handle;
	int stat, mcnlen;
	char buf[24];
	unsigned char cmd[BLK_MAX_CDB];
	unsigned len = sizeof(buf);

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_READ_SUBCHANNEL;
	cmd[1] = 2;		/* MSF addressing */
	cmd[2] = 0x40;	/* request subQ data */
	cmd[3] = 2;		/* format */
	cmd[8] = len;

	stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
	if (stat)
		return stat;

	mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
	memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
	mcn_info->medium_catalog_number[mcnlen] = '\0';

	return 0;
}

int ide_cdrom_reset(struct cdrom_device_info *cdi)
{
	ide_drive_t *drive = cdi->handle;
	struct cdrom_info *cd = drive->driver_data;
	struct request_sense sense;
	struct request *rq;
	int ret;

	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
	rq->cmd_type = REQ_TYPE_SPECIAL;
	rq->cmd_flags = REQ_QUIET;
	ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
	blk_put_request(rq);
	/*
	 * A reset will unlock the door. If it was previously locked,
	 * lock it again.
	 */
	if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
		(void)ide_cd_lockdoor(drive, 1, &sense);

	return ret;
}

static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
				struct atapi_toc_entry **ent)
{
	struct cdrom_info *info = drive->driver_data;
	struct atapi_toc *toc = info->toc;
	int ntracks;

	/*
	 * don't serve cached data, if the toc isn't valid
	 */
	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
		return -EINVAL;

	/* Check validity of requested track number. */
	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;

	if (toc->hdr.first_track == CDROM_LEADOUT)
		ntracks = 0;

	if (track == CDROM_LEADOUT)
		*ent = &toc->ent[ntracks];
	else if (track < toc->hdr.first_track || track > toc->hdr.last_track)
		return -EINVAL;
	else
		*ent = &toc->ent[track - toc->hdr.first_track];

	return 0;
}

static int ide_cd_fake_play_trkind(ide_drive_t *drive, void *arg)
{
	struct cdrom_ti *ti = arg;
	struct atapi_toc_entry *first_toc, *last_toc;
	unsigned long lba_start, lba_end;
	int stat;
	struct request_sense sense;
	unsigned char cmd[BLK_MAX_CDB];

	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	if (stat)
		return stat;

	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	if (stat)
		return stat;

	if (ti->cdti_trk1 != CDROM_LEADOUT)
		++last_toc;
	lba_start = first_toc->addr.lba;
	lba_end   = last_toc->addr.lba;

	if (lba_end <= lba_start)
		return -EINVAL;

	memset(cmd, 0, BLK_MAX_CDB);

	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	lba_to_msf(lba_start,   &cmd[3], &cmd[4], &cmd[5]);
	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);

	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
}

static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
{
	struct cdrom_info *cd = drive->driver_data;
	struct cdrom_tochdr *tochdr = arg;
	struct atapi_toc *toc;
	int stat;

	/* Make sure our saved TOC is valid. */
	stat = ide_cd_read_toc(drive, NULL);
	if (stat)
		return stat;

	toc = cd->toc;
	tochdr->cdth_trk0 = toc->hdr.first_track;
	tochdr->cdth_trk1 = toc->hdr.last_track;

	return 0;
}

static int ide_cd_read_tocentry(ide_drive_t *drive, void *arg)
{
	struct cdrom_tocentry *tocentry = arg;
	struct atapi_toc_entry *toce;
	int stat;

	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	if (stat)
		return stat;

	tocentry->cdte_ctrl = toce->control;
	tocentry->cdte_adr  = toce->adr;
	if (tocentry->cdte_format == CDROM_MSF) {
		lba_to_msf(toce->addr.lba,
			   &tocentry->cdte_addr.msf.minute,
			   &tocentry->cdte_addr.msf.second,
			   &tocentry->cdte_addr.msf.frame);
	} else
		tocentry->cdte_addr.lba = toce->addr.lba;

	return 0;
}

int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
			  unsigned int cmd, void *arg)
{
	ide_drive_t *drive = cdi->handle;

	switch (cmd) {
	/*
	 * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	 * atapi doesn't support it
	 */
	case CDROMPLAYTRKIND:
		return ide_cd_fake_play_trkind(drive, arg);
	case CDROMREADTOCHDR:
		return ide_cd_read_tochdr(drive, arg);
	case CDROMREADTOCENTRY:
		return ide_cd_read_tocentry(drive, arg);
	default:
		return -EINVAL;
	}
}

/* the generic packet interface to cdrom.c */
int ide_cdrom_packet(struct cdrom_device_info *cdi,
			    struct packet_command *cgc)
{
	ide_drive_t *drive = cdi->handle;
	unsigned int flags = 0;
	unsigned len = cgc->buflen;

	if (cgc->timeout <= 0)
		cgc->timeout = ATAPI_WAIT_PC;

	/* here we queue the commands from the uniform CD-ROM
	   layer. the packet must be complete, as we do not
	   touch it at all. */

	if (cgc->data_direction == CGC_DATA_WRITE)
		flags |= REQ_RW;

	if (cgc->sense)
		memset(cgc->sense, 0, sizeof(struct request_sense));

	if (cgc->quiet)
		flags |= REQ_QUIET;

	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
				    cgc->data_direction == CGC_DATA_WRITE,
				    cgc->buffer, &len,
				    cgc->sense, cgc->timeout, flags);
	if (!cgc->stat)
		cgc->buflen -= len;
	return cgc->stat;
}
Commit	Line	Data
17802998 BZ	1	/*
	2	* cdrom.c IOCTLs handling for ide-cd driver.
	3	*
	4	* Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
	5	* Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
	6	* Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/cdrom.h>
	11	#include <linux/ide.h>
f9afd18b	12	#include <scsi/scsi.h>
17802998 BZ	13
	14	#include "ide-cd.h"
	15
f9afd18b BP	16	/****************************************************************************
	17	* Other driver requests (open, close, check media change).
	18	*/
	19	int ide_cdrom_open_real(struct cdrom_device_info *cdi, int purpose)
	20	{
	21	return 0;
	22	}
	23
	24	/*
	25	* Close down the device. Invalidate all cached blocks.
	26	*/
	27	void ide_cdrom_release_real(struct cdrom_device_info *cdi)
	28	{
	29	ide_drive_t *drive = cdi->handle;
f9afd18b BP	30
f9afd18b BP	31	if (!cdi->use_count)
570f89ea	32	drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
f9afd18b BP	33	}
	34
	35	/*
	36	* add logic to try GET_EVENT command first to check for media and tray
	37	* status. this should be supported by newer cd-r/w and all DVD etc
	38	* drives
	39	*/
	40	int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
	41	{
	42	ide_drive_t *drive = cdi->handle;
	43	struct media_event_desc med;
	44	struct request_sense sense;
	45	int stat;
	46
	47	if (slot_nr != CDSL_CURRENT)
	48	return -EINVAL;
	49
	50	stat = cdrom_check_status(drive, &sense);
	51	if (!stat \|\| sense.sense_key == UNIT_ATTENTION)
	52	return CDS_DISC_OK;
	53
	54	if (!cdrom_get_media_event(cdi, &med)) {
	55	if (med.media_present)
	56	return CDS_DISC_OK;
	57	else if (med.door_open)
	58	return CDS_TRAY_OPEN;
	59	else
	60	return CDS_NO_DISC;
	61	}
	62
	63	if (sense.sense_key == NOT_READY && sense.asc == 0x04
	64	&& sense.ascq == 0x04)
	65	return CDS_DISC_OK;
	66
	67	/*
	68	* If not using Mt Fuji extended media tray reports,
	69	* just return TRAY_OPEN since ATAPI doesn't provide
	70	* any other way to detect this...
	71	*/
	72	if (sense.sense_key == NOT_READY) {
	73	if (sense.asc == 0x3a && sense.ascq == 1)
	74	return CDS_NO_DISC;
	75	else
	76	return CDS_TRAY_OPEN;
	77	}
	78	return CDS_DRIVE_NOT_READY;
	79	}
	80
	81	int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
	82	int slot_nr)
	83	{
	84	ide_drive_t *drive = cdi->handle;
f9afd18b BP	85	int retval;
	86
	87	if (slot_nr == CDSL_CURRENT) {
	88	(void) cdrom_check_status(drive, NULL);
fe11edfa BZ	89	retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
fe11edfa BZ	90	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
f9afd18b BP	91	return retval;
	92	} else {
	93	return -EINVAL;
	94	}
	95	}
	96
	97	/* Eject the disk if EJECTFLAG is 0.
	98	If EJECTFLAG is 1, try to reload the disk. */
	99	static
	100	int cdrom_eject(ide_drive_t *drive, int ejectflag,
	101	struct request_sense *sense)
	102	{
	103	struct cdrom_info *cd = drive->driver_data;
	104	struct cdrom_device_info *cdi = &cd->devinfo;
f9afd18b	105	char loej = 0x02;
5f828546	106	unsigned char cmd[BLK_MAX_CDB];
f9afd18b	107
570f89ea	108	if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
f9afd18b BP	109	return -EDRIVE_CANT_DO_THIS;
	110
	111	/* reload fails on some drives, if the tray is locked */
570f89ea	112	if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
f9afd18b BP	113	return 0;
f9afd18b BP	114
f9afd18b BP	115	/* only tell drive to close tray if open, if it can do that */
	116	if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY))
	117	loej = 0;
	118
5f828546 FT	119	memset(cmd, 0, BLK_MAX_CDB);
	120
	121	cmd[0] = GPCMD_START_STOP_UNIT;
	122	cmd[4] = loej \| (ejectflag != 0);
f9afd18b	123
1a677aba	124	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, 0);
f9afd18b BP	125	}
	126
	127	/* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
	128	static
	129	int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
	130	struct request_sense *sense)
	131	{
f9afd18b	132	struct request_sense my_sense;
f9afd18b BP	133	int stat;
	134
	135	if (sense == NULL)
	136	sense = &my_sense;
	137
	138	/* If the drive cannot lock the door, just pretend. */
42619d35	139	if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0) {
f9afd18b BP	140	stat = 0;
f9afd18b BP	141	} else {
5f828546 FT	142	unsigned char cmd[BLK_MAX_CDB];
	143
	144	memset(cmd, 0, BLK_MAX_CDB);
	145
	146	cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
	147	cmd[4] = lockflag ? 1 : 0;
	148
1a677aba	149	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL,
5f828546	150	sense, 0, 0);
f9afd18b BP	151	}
	152
	153	/* If we got an illegal field error, the drive
	154	probably cannot lock the door. */
	155	if (stat != 0 &&
	156	sense->sense_key == ILLEGAL_REQUEST &&
	157	(sense->asc == 0x24 \|\| sense->asc == 0x20)) {
	158	printk(KERN_ERR "%s: door locking not supported\n",
	159	drive->name);
42619d35	160	drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
f9afd18b BP	161	stat = 0;
	162	}
	163
	164	/* no medium, that's alright. */
	165	if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a)
	166	stat = 0;
	167
	168	if (stat == 0) {
	169	if (lockflag)
570f89ea	170	drive->atapi_flags \|= IDE_AFLAG_DOOR_LOCKED;
f9afd18b	171	else
570f89ea	172	drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
f9afd18b BP	173	}
	174
	175	return stat;
	176	}
	177
	178	int ide_cdrom_tray_move(struct cdrom_device_info *cdi, int position)
	179	{
	180	ide_drive_t *drive = cdi->handle;
	181	struct request_sense sense;
	182
	183	if (position) {
	184	int stat = ide_cd_lockdoor(drive, 0, &sense);
	185
	186	if (stat)
	187	return stat;
	188	}
	189
	190	return cdrom_eject(drive, !position, &sense);
	191	}
	192
17802998 BZ	193	int ide_cdrom_lock_door(struct cdrom_device_info *cdi, int lock)
	194	{
	195	ide_drive_t *drive = cdi->handle;
	196
	197	return ide_cd_lockdoor(drive, lock, NULL);
	198	}
	199
	200	/*
	201	* ATAPI devices are free to select the speed you request or any slower
	202	* rate. :-( Requesting too fast a speed will _not_ produce an error.
	203	*/
	204	int ide_cdrom_select_speed(struct cdrom_device_info *cdi, int speed)
	205	{
	206	ide_drive_t *drive = cdi->handle;
	207	struct cdrom_info *cd = drive->driver_data;
17802998 BZ	208	struct request_sense sense;
	209	u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
	210	int stat;
5f828546	211	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	212
	213	if (speed == 0)
	214	speed = 0xffff; /* set to max */
	215	else
	216	speed = 177; / Nx to kbytes/s */
	217
5f828546 FT	218	memset(cmd, 0, BLK_MAX_CDB);
	219
	220	cmd[0] = GPCMD_SET_SPEED;
17802998	221	/* Read Drive speed in kbytes/second MSB/LSB */
5f828546 FT	222	cmd[2] = (speed >> 8) & 0xff;
5f828546 FT	223	cmd[3] = speed & 0xff;
17802998 BZ	224	if ((cdi->mask & (CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) !=
	225	(CDC_CD_R \| CDC_CD_RW \| CDC_DVD_R)) {
	226	/* Write Drive speed in kbytes/second MSB/LSB */
5f828546 FT	227	cmd[4] = (speed >> 8) & 0xff;
5f828546 FT	228	cmd[5] = speed & 0xff;
17802998 BZ	229	}
17802998 BZ	230
1a677aba	231	stat = ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
17802998 BZ	232
	233	if (!ide_cdrom_get_capabilities(drive, buf)) {
	234	ide_cdrom_update_speed(drive, buf);
	235	cdi->speed = cd->current_speed;
	236	}
	237
	238	return 0;
	239	}
	240
	241	int ide_cdrom_get_last_session(struct cdrom_device_info *cdi,
	242	struct cdrom_multisession *ms_info)
	243	{
	244	struct atapi_toc *toc;
	245	ide_drive_t *drive = cdi->handle;
	246	struct cdrom_info *info = drive->driver_data;
	247	struct request_sense sense;
	248	int ret;
	249
570f89ea	250	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 \|\| !info->toc) {
17802998 BZ	251	ret = ide_cd_read_toc(drive, &sense);
	252	if (ret)
	253	return ret;
	254	}
	255
	256	toc = info->toc;
	257	ms_info->addr.lba = toc->last_session_lba;
	258	ms_info->xa_flag = toc->xa_flag;
	259
	260	return 0;
	261	}
	262
	263	int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
	264	struct cdrom_mcn *mcn_info)
	265	{
	266	ide_drive_t *drive = cdi->handle;
	267	int stat, mcnlen;
17802998	268	char buf[24];
5f828546 FT	269	unsigned char cmd[BLK_MAX_CDB];
5f828546 FT	270	unsigned len = sizeof(buf);
17802998	271
5f828546	272	memset(cmd, 0, BLK_MAX_CDB);
17802998	273
5f828546 FT	274	cmd[0] = GPCMD_READ_SUBCHANNEL;
	275	cmd[1] = 2; /* MSF addressing */
	276	cmd[2] = 0x40; /* request subQ data */
	277	cmd[3] = 2; /* format */
	278	cmd[8] = len;
17802998	279
5f828546	280	stat = ide_cd_queue_pc(drive, cmd, 0, buf, &len, NULL, 0, 0);
17802998 BZ	281	if (stat)
	282	return stat;
	283
	284	mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
	285	memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
	286	mcn_info->medium_catalog_number[mcnlen] = '\0';
	287
	288	return 0;
	289	}
	290
	291	int ide_cdrom_reset(struct cdrom_device_info *cdi)
	292	{
	293	ide_drive_t *drive = cdi->handle;
	294	struct cdrom_info *cd = drive->driver_data;
	295	struct request_sense sense;
0ef4c4db	296	struct request *rq;
17802998 BZ	297	int ret;
17802998 BZ	298
0ef4c4db FT	299	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
	300	rq->cmd_type = REQ_TYPE_SPECIAL;
	301	rq->cmd_flags = REQ_QUIET;
	302	ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
	303	blk_put_request(rq);
17802998 BZ	304	/*
	305	* A reset will unlock the door. If it was previously locked,
	306	* lock it again.
	307	*/
570f89ea	308	if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
17802998 BZ	309	(void)ide_cd_lockdoor(drive, 1, &sense);
	310
	311	return ret;
	312	}
	313
	314	static int ide_cd_get_toc_entry(ide_drive_t *drive, int track,
	315	struct atapi_toc_entry **ent)
	316	{
	317	struct cdrom_info *info = drive->driver_data;
	318	struct atapi_toc *toc = info->toc;
	319	int ntracks;
	320
	321	/*
	322	* don't serve cached data, if the toc isn't valid
	323	*/
570f89ea	324	if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
17802998 BZ	325	return -EINVAL;
	326
	327	/* Check validity of requested track number. */
	328	ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
	329
	330	if (toc->hdr.first_track == CDROM_LEADOUT)
	331	ntracks = 0;
	332
	333	if (track == CDROM_LEADOUT)
	334	*ent = &toc->ent[ntracks];
	335	else if (track < toc->hdr.first_track \|\| track > toc->hdr.last_track)
	336	return -EINVAL;
	337	else
	338	*ent = &toc->ent[track - toc->hdr.first_track];
	339
	340	return 0;
	341	}
	342
	343	static int ide_cd_fake_play_trkind(ide_drive_t drive, void arg)
	344	{
	345	struct cdrom_ti *ti = arg;
	346	struct atapi_toc_entry first_toc, last_toc;
	347	unsigned long lba_start, lba_end;
	348	int stat;
17802998	349	struct request_sense sense;
5f828546	350	unsigned char cmd[BLK_MAX_CDB];
17802998 BZ	351
	352	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
	353	if (stat)
	354	return stat;
	355
	356	stat = ide_cd_get_toc_entry(drive, ti->cdti_trk1, &last_toc);
	357	if (stat)
	358	return stat;
	359
	360	if (ti->cdti_trk1 != CDROM_LEADOUT)
	361	++last_toc;
	362	lba_start = first_toc->addr.lba;
	363	lba_end = last_toc->addr.lba;
	364
	365	if (lba_end <= lba_start)
	366	return -EINVAL;
	367
5f828546	368	memset(cmd, 0, BLK_MAX_CDB);
17802998	369
5f828546 FT	370	cmd[0] = GPCMD_PLAY_AUDIO_MSF;
	371	lba_to_msf(lba_start, &cmd[3], &cmd[4], &cmd[5]);
	372	lba_to_msf(lba_end - 1, &cmd[6], &cmd[7], &cmd[8]);
17802998	373
1a677aba	374	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, &sense, 0, 0);
17802998 BZ	375	}
	376
	377	static int ide_cd_read_tochdr(ide_drive_t drive, void arg)
	378	{
	379	struct cdrom_info *cd = drive->driver_data;
	380	struct cdrom_tochdr *tochdr = arg;
	381	struct atapi_toc *toc;
	382	int stat;
	383
	384	/* Make sure our saved TOC is valid. */
	385	stat = ide_cd_read_toc(drive, NULL);
	386	if (stat)
	387	return stat;
	388
	389	toc = cd->toc;
	390	tochdr->cdth_trk0 = toc->hdr.first_track;
	391	tochdr->cdth_trk1 = toc->hdr.last_track;
	392
	393	return 0;
	394	}
	395
	396	static int ide_cd_read_tocentry(ide_drive_t drive, void arg)
	397	{
	398	struct cdrom_tocentry *tocentry = arg;
	399	struct atapi_toc_entry *toce;
	400	int stat;
	401
	402	stat = ide_cd_get_toc_entry(drive, tocentry->cdte_track, &toce);
	403	if (stat)
	404	return stat;
	405
	406	tocentry->cdte_ctrl = toce->control;
	407	tocentry->cdte_adr = toce->adr;
	408	if (tocentry->cdte_format == CDROM_MSF) {
	409	lba_to_msf(toce->addr.lba,
	410	&tocentry->cdte_addr.msf.minute,
	411	&tocentry->cdte_addr.msf.second,
	412	&tocentry->cdte_addr.msf.frame);
	413	} else
	414	tocentry->cdte_addr.lba = toce->addr.lba;
	415
	416	return 0;
	417	}
	418
	419	int ide_cdrom_audio_ioctl(struct cdrom_device_info *cdi,
	420	unsigned int cmd, void *arg)
	421	{
	422	ide_drive_t *drive = cdi->handle;
	423
	424	switch (cmd) {
	425	/*
	426	* emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since
	427	* atapi doesn't support it
	428	*/
	429	case CDROMPLAYTRKIND:
	430	return ide_cd_fake_play_trkind(drive, arg);
	431	case CDROMREADTOCHDR:
	432	return ide_cd_read_tochdr(drive, arg);
	433	case CDROMREADTOCENTRY:
	434	return ide_cd_read_tocentry(drive, arg);
	435	default:
	436	return -EINVAL;
	437	}
	438	}
f9afd18b BP	439
	440	/* the generic packet interface to cdrom.c */
	441	int ide_cdrom_packet(struct cdrom_device_info *cdi,
	442	struct packet_command *cgc)
	443	{
f9afd18b	444	ide_drive_t *drive = cdi->handle;
5f828546 FT	445	unsigned int flags = 0;
5f828546 FT	446	unsigned len = cgc->buflen;
f9afd18b BP	447
	448	if (cgc->timeout <= 0)
	449	cgc->timeout = ATAPI_WAIT_PC;
	450
	451	/* here we queue the commands from the uniform CD-ROM
	452	layer. the packet must be complete, as we do not
	453	touch it at all. */
b348487f BZ	454
b348487f BZ	455	if (cgc->data_direction == CGC_DATA_WRITE)
5f828546	456	flags \|= REQ_RW;
b348487f	457
f9afd18b BP	458	if (cgc->sense)
f9afd18b BP	459	memset(cgc->sense, 0, sizeof(struct request_sense));
f9afd18b BP	460
f9afd18b BP	461	if (cgc->quiet)
5f828546	462	flags \|= REQ_QUIET;
f9afd18b	463
5f828546 FT	464	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
	465	cgc->data_direction == CGC_DATA_WRITE,
	466	cgc->buffer, &len,
	467	cgc->sense, cgc->timeout, flags);
f9afd18b	468	if (!cgc->stat)
5f828546	469	cgc->buflen -= len;
f9afd18b BP	470	return cgc->stat;
f9afd18b BP	471	}